Learjet 31 (certified family) airworthiness directives FAA ADs that may apply, with the official text
- In effect
- 20
- Recurring
- 4
- Superseded or removed2
- Latest2010-06-11
Learjet 31 (certified family): price, specs and every tail number · Look up ADs by N-number · AD burden by model, ranked
IN EFFECT
20 Learjet 31 (certified family) ADs in effect, newest first
Informational only. These are FAA airworthiness directives whose published applicability names this make and model. Whether an AD applies to a particular aircraft depends on its serial number, installed engines, propellers, parts and modifications, and some ADs listed here will not apply. This list is not the official AD record and not a compliance determination: confirm applicability and compliance against the FAA’s Dynamic Regulatory System and the aircraft’s records with a certificated mechanic or inspector. Covers ADs published in the Federal Register since 1995, through Oct 1, 2026; older ADs, and engine, propeller and appliance ADs that do not name the aircraft, are not included.
- AD 2010-06-11 One-time Engine
Honeywell International Inc. TFE731 Series Turbofan Engines
We are issuing this AD to prevent an uncontained failure of a second stage LPCR disc and/or a third stage LPCR disc due to cracks in the bore, which could result in damage to the airplane.
Applicability, as the AD words it
This AD applies to Honeywell International Inc. TFE731-2, TFE731-2A, TFE731-2C, TFE731-3, TFE731-3A, TFE731-3AR, TFE731-3B, TFE731-3BR, TFE731-3C, TFE731-3CR, TFE731-3D, TFE731-3DR, TFE731-3R, TFE731-4, TFE731-4R, TFE731-5, TFE731-5AR, TFE731-5BR, and TFE731-5R series turbofan engines with certain second stage low-pressure compressor rotor (LPCR) discs, part number (P/N) 3072396-1 or 3075190-1, and/or certain third stage LPCR discs, P/N 3072397-1 or 3075192-1, installed. These engines are installed on, but not limited to, the airplanes listed in Table 1 of this AD. Table 1--Installed on Airplanes by Manufacturer Manufacturer Model Dassault-Aviation or Dassault Aviation. Falcon 10 (Falcon 100) and Mystere-Falcon 20, 50, 900 and MF900 series. Cessna Aircraft Company: Model 650, Citation III, VI, and VII. Gulfstream Aerospace LP: 1125 Westwind Astra. Israel Aircraft Industries: 1124 and 1124A (Westwind). Learjet Inc: 31, 31A, 35, 35A, 36, 36A, 55, 55B, 55C, and M31. Lockheed Martin Corporation (formerly 1329-23A, 1329-23D, 1329-23E, Lockheed-Georgia). and 1329-25. Raytheon Corporate Jets (formerly DH.125 Series 1A, 3A, and 3A/ British Aerospace and Hawker RA, HS.125 Series F3B and F3B/ Beechcraft Corporation). RA, BH.125 and DH.125 Series 400A, HS.125 Series 403B, F400B, and F403B, HS.125 Series 600A, BH.125 Series 600A, HS.125 Series F600B, 700A, and 700B, BAe.125 Series 800 and 1000, and Hawker 800 and 850XP series.
- AD 2008-02-19 One-time Engine
Honeywell International Inc. TFE731-2C, -3B, -3BR, -3C, -3CR, -3D, -3DR, -4R, -5AR, -5BR, -5R, -20R, -20AR, -20BR, -40, -40AR, -40R, and -60 Series Turbofan Engines
We are issuing this AD to prevent uncontained failure of the HP turbine rotor assembly, which could result in damage to the airplane.
Applicability, as the AD words it
This AD applies to Honeywell International Inc. (Honeywell) TFE731-2C, -3B, -3BR, -3C, -3CR, -3D, -3DR, -4R, -5AR, -5BR, -5R, - 20R, -20AR, -20BR, -40, -40AR, -40R, and -60 series turbofan engines with certain high pressure (HP) turbine rotor discs part numbers and serial numbers. These engines are installed on, but not limited to, the following airplanes: Avions Marcel Dassault Mystere-Falcon 10 and 50 Series Cessna Model 650; Citations III, VI, and VII Dassault-Aviation 20, 50, 50EX, 900, MF900, and 900EX (900DX) Series Gulfstream Aerospace LP (formerly IAI) 1125 Westwind Astra, Astra SPX, Gulfstream 100 Series Israel Aircraft Industries (IAI) 1124 Series (Westwind 1124) Learjet 31, 35, 36, 45 (or Learjet 40), and 55 Series Lockheed-Georgia 3329-25 Series (731 Jetstar, Jetstar II) Raytheon Corporate Jets (formerly British Aerospace) Hawker 800 and 850 Series Sabreliner NA-265-65 (Sabreliner 65)
- AD 2007-17-17 One-time
Learjet Model 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C Airplanes, and Model 45 Airplanes
We are issuing this AD to prevent penetration of flammable liquids or fire through the engine firewall into the engine pylon, which could lead to fire inside the airplane.
Applicability, as the AD words it
This AD applies to Learjet Model 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C airplanes, and Model 45 airplanes; certificated in any category; as identified in the service information specified in Table 1 of this AD. Table 1.--Applicable Service Information Learjet airplane model Service Bulletin Revision level Date 31/31A: Bombardier Service 1: August 21, 2006. Bulletin 31-54-2. 45: Bombardier Service 2: August 15, 2003. Bulletin 45-54-3. 35/35A (C-21A) and 36/36A: Learjet Service Original: March 16, 2001. Bulletin 35/36-54-3. 55/55B/55C: Learjet Service Original: March 16, 2001. Bulletin 55-54-3.
- AD 2007-04-18 One-time
Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C Airplanes
We are issuing this AD to prevent this inadvertent operation, which could result in inadvertent fuel transfer by the left or right wing fuel system and subsequent over-limit fuel imbalance between the left and right wing fuel loads.
Applicability, as the AD words it
This AD applies to the Learjet models identified in the applicable Bombardier service bulletin listed in Table 1 of this AD. Table 1.--Applicability by Service Bulletin Bombardier service bulletin Revision level Date Learjet model(s) SB 23-28-6: Original: April 21, 1998: 23. SB 24/25-28-3: 2: February 21, 1998: 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, and 24F-A airplanes; and 25, 25A, 25B, 25C, 25D, and 25F airplanes. SB 28/29-28-4: 3: June 2, 1999: 28 and 29 airplanes. SB 31-28-7: 3: January 26, 2001: 31 and 31A airplanes. SB 35/36-28-11: 4: December 4, 2000: 35 and 35A (C-21A) airplanes; 36 and 36A airplanes. SB 55-28-13: 3: December 15, 2000: 55, 55B and 55C airplanes.
- AD 2005-13-36 One-time
Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), and 36 Airplanes
This AD was prompted by a report indicating that an aileron cable failed on one affected airplane when the cable underwent a tension check.
Applicability, as the AD words it
This AD applies to Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), and 36 airplanes; certificated in any category; as identified in the Bombardier alert service bulletins in Table 1 of this AD. Table 1.--Service Bulletins Bombardier alert service bulletin Date Model A23/24/25-27-17: December 23, 2002: 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, and 25F airplanes. A28/29-27-24: December 23, 2002: 28 and 29 airplanes. A31-27-25: December 23, 2002: 31 and 31A airplanes. A35/36-27-42: December 23, 2002: 35, 35A (C-21A), and 36 airplanes.
- AD 2005-13-07 One-time Engine
Honeywell International Inc. (Formerly AlliedSignal Inc. and Garrett Turbine Engine Co.) TFE731-2 and -3 Series Turbofan Engines
We are issuing this AD to prevent LP turbine rotor disk separation, which could result in an uncontained engine failure and damage to the airplane.
Applicability, as the AD words it
This AD applies to Honeywell International Inc. (formerly AlliedSignal Inc. and Garrett Turbine Engine Co.) TFE731-2 and -3 series turbofan engines with the following low pressure (LP) 1st and 2nd stage turbine rotor disc part numbers (P/Ns), with serial numbers (SNs) listed in Tables 1, 2, and 3 of Honeywell International Inc. SB No. TFE731-72-3682, dated November 26, 2002, initially installed as new parts before April 1, 1991: Part Numbers 3072069-All: 3073014-All 3072070-All: 3073113-All 3072351-All: 3071114-All 3072542-All: 3074103-All 3073013-All: 3074105-All (All denotes all dash numbers installed) These engines are installed on, but not limited to, the following airplanes: Avions Marcel Dassault Mystere-Falcon 10 and 50 series Cessna Model 650, Citation III, and Citation VI Gulfstream Aerospace LP (formerly IAI) 1125 Westwind Astra series Israel Aircraft Industries (IAI) 1124 series Learjet 31, 35, 36, and 55 series Lockheed-Georgia 1329-25 series (731 Jetstar, Jetstar II) Raytheon Corporate Jets (formerly British Aerospace) DH/HS/BH-125 series; Sabreliner NA-265-65 (Sabreliner 65)
- AD 2005-05-15 Recurring Engine
Honeywell International Inc. TFE731-2 and -3 Series Turbofan Engines
We are issuing this AD to prevent uncontained failure of the LPT stage 1 disk, and possible damage to the airplane.
Applicability, as the AD words it
This AD applies to Honeywell International Inc. (formerly AlliedSignal Inc. and Garrett Turbine Engine Co.) TFE731-2 and -2C series, and TFE731-3, -3A, -3AR, -3B, -3BR, and -3R series turbofan engines, with low pressure turbine (LPT) stage 1 disks, part numbers (P/Ns) 3072070-All, 3072351-All, 3073013-All, 3073113-All, 3073497- All, and 3074103-All, (where All denotes all dash numbers), installed. These engines are installed on, but not limited to, the following airplanes: Avions Marcel Dassault Falcon 10 and Mystere Falcon 50 series Learjet 31, 35, 36, and 55 series Lockheed-Georgia 1329-25 series Israel Aircraft Industries 1124 series and 1125 Westwind series Cessna Model 650, Citations III and VI Raytheon British Aerospace HS-125 series Sabreliner NA-265-65
- AD 2004-03-08 Recurring
Learjet Model 31, 31A, 35, 35A (C-21A), 36, and 36A Airplanes
To prevent significant structural damage to the engine pylons, possible separation of the engines from the fuselage, and consequent reduced controllability of the airplane.
Applicability, as the AD words it
The following airplanes, certificated in any category, as applicable: Table 1.--Applicability As Listed in Bombardier Service Bulletin-- Model-- 31 and 31A Airplanes: 31-51-2, dated February 1, 2001; and 31- 51-3, Revision 1, dated August 2, 2001. 35, 35A (C-21A), 36 and 36A 35/36-51-3, dated February 1, 2001; and Airplanes. 35/36-51-4, Revision 1, dated August 2, 2001.
- AD 2001-23-09 One-time Engine
Honeywell International Inc. TFE731-2, -3, and -4 Series Turbofan Engines
To prevent failure of the fan rotor disc due to fatigue cracking in the dovetail slots, which could result in in-flight engine shutdown, uncontained engine failure, and damage to the airplane.
Applicability, as the AD words it
This airworthiness directive (AD) is applicable to Honeywell International Inc. (formerly AlliedSignal Inc. and Garrett Turbine Engine Co.) TFE731-2, -3, and -4 series turbofan engines, with fan rotor discs part numbers (P/N's) 3072162-All, 3072816-All, 3073436- All, 3073539-All, and 3074529-All (where All denotes all dash numbers). These engines are installed on, but not limited to, Avions Marcel Dassault Falcon 10, 50, and 100 series; Learjet 31, 35, 36, and 55 series; Lockheed-Georgia 1329-23 and -25 series; Israel Aircraft Industries 1124 series and 1125 Westwind series; Cessna Model 650, Citations III, VI, and VII; Raytheon British Aerospace HS-125 series; and Sabreliner NA-265-65 airplanes.
- AD 2001-07-11 One-time
Learjet Model 23, 24, 25, 28, 29, 31, 35, 36, and 55 Series Airplanes
Applicability, as the AD words it
All Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D- A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A military), 36, 36A, 55, 55B, and 55C airplanes; certificated in any category.
- AD 2000-15-09 Recurring Engine
Honeywell International Inc. TFE731-2, -3, -4, and -5 Series Turbofan Engines
To prevent failure of the HPC impeller due to fatigue cracking.
Applicability, as the AD words it
Honeywell International Inc. (formerly AlliedSignal Inc. and Garrett Turbine Engine Company) TFE731-2, -3, -4, and -5 series turbofan engines with high pressure compressor (HPC) impeller part numbers (P/Ns) 3073393-1, 3073394-1, 3073433-1, 3073434-1, 3073398- All (All denotes all dash numbers), 3073435-All, and 3075171-All, installed on, but not limited to, Avions Marcel Dassault-Breguet Aviation (AMD-BA) Falcon 10, Dassault-Aviation Mystere-Falcon 50, and 900 series airplanes; Dassault Aviation Mystere-Falcon 20 series airplanes; Learjet Inc. Models 31, 35, 36, and 55 series airplanes; Lockheed-Georgia Corporation 1329-23 and 25 series airplanes; Israel Aircraft Industries Ltd. 1124 series and 1125 Westwind series airplanes; Cessna Aircraft Co. Model 650 Citation III, VI, and VII series airplanes; Raytheon Aircraft Co. HS-125 series airplanes; and Sabreliner Corporation NA-265-65 airplanes.
- AD 99-23-19 One-time
Learjet Model 31, 31A, 35, 35A, and 60 Airplanes
To prevent failure of the spoiler actuator, which could result in the spoiler panel floating and inducing an uncommanded roll of the airplane.
Applicability, as the AD words it
Model 31 and 31A airplanes, serial numbers 31- 033, 31-105, 31-114, 31-126, and 31-150 through 31-161 inclusive; Model 35 and 35A airplanes, serial numbers 35-065, 35-242, 35-300, 35-323, 35-447, 35-622, and 35-670; and Model 60 airplanes, serial numbers 60-029, 60-050, 60-120 through 60-139 inclusive; certificated in any category.
- AD 98-17-01 One-time Engine
AlliedSignal Inc. TFE731 Series Turbofan Engines
To prevent cracked fuel tubes and the subsequent leakage of fuel on and around electrical components, which can cause an engine fire.
Applicability, as the AD words it
AlliedSignal Inc. (formerly Allied-Signal Aerospace Company, Garrett Engine Division and Garrett Turbine Engine Co.) TFE731-2, -3, and -4 series turbofan engines with fuel tubes, part numbers (P/Ns) 3071051-1, 3073729-1, or 3072886-1, installed. These engines are installed on but not limited to the following airplanes: Avions Marcel Dassault Falcon 10, 50, and 100 series; Cessna Model 650, Citation III, VI, and VII; Learjet 31 (M31) 35, 36 and 55 series, Raytheon British Aerospace HS-125 series; and Sabreliner NA-265-65.
- AD 99-16-03 One-time
Learjet Model 23, 24, 25, 28, 29, 31, 55, and 60 Series Airplanes
To prevent undetected accretion of ice on the leading edge of the horizontal stabilizer, which could result in the loss of pitch control and consequent reduced controllability of the airplane.
Applicability, as the AD words it
Model 23, 24, 25, 28, 29, 31, 55, and 60 series airplanes; as listed in Learjet Service Bulletins SB 23/24/25-30-3, SB 28/29-30-3, SB 31-30-05, SB 55-30-3, and SB 60-30-4, all dated October 27, 1998; certificated in any category.
- AD 98-06-28 One-time
Learjet Model 31 and 35A Airplanes
To prevent electrical arcing and consequent fire hazard.
Applicability, as the AD words it
Model 31 airplanes having serial numbers 31-002 through 31-029 inclusive, and Model 35A airplanes having serial numbers 35-647 through 35-670 inclusive; certificated in any category.
- AD 96-18-13 One-time Engine
AlliedSignal Inc. TFE731 Series Turbofan Engines
To prevent uncontained failure of the fan rotor disk due to fatigue cracking in the dovetail slots, which can result in inflight engine shutdowns, severe secondary damage, and fan rotor assembly separation from the engine.
Applicability, as the AD words it
AlliedSignal Inc. (formerly Garrett Engine Division) Models TFE731-2, -2A, -3, -3A, -3AR, -3B, -3BR, -3C, -3CR, -3D, -3DR, -3R, and -4R turbofan engines, installed on, but not limited to the following aircraft: Avions Marcel Dassault Falcon 10, 50, 100 series; Learjet 31, 35, 36, and 55 series; Lockheed-Georgia 1329-23 and -25 series; Israel Aircraft Industries 1124 series and 1125 Westwind series; Cessna Model 650, Citations III, VI, and VII; Raytheon British Aerospace HS-125 series; and Sabreliner NA-265-65. Note: This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (d) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
- AD 96-05-03 Recurring Engine
AlliedSignal Inc. TFE731 Series Turbofan Engines
To prevent uncontained failure of fan rotor disks due to fatigue cracking in the dovetail slots, which can result in inflight engine shutdowns, severe secondary damage, and fan rotor assembly separation from the engine.
Applicability, as the AD words it
AlliedSignal Inc. (formerly Garrett Engine Division) TFE731-2, -2A, -3, -3A, -3AR, -3B, -3BR, -3C, -3CR, -3D, - 3DR, -3R, and -4R series turbofan engines with fan rotor disk part numbers (P/N's) 3072162-1 through -5, 3072816-1, -2, and -3, 3073436-1 through -5, 3073539-(All), and 3074529-(All), where (All) denotes any dash number, installed on but not limited to the following aircraft: Avions Marcel Dassault Falcon 10, 50, 100 series; Learjet 31, 35, 36, and 55 series; Lockheed-Georgia 1329-23 and -25 series; Israel Aircraft Industries 1124 and 1125 series; Cessna 650, Citations III, VI, and VII; Raytheon British Aerospace HS-125 series; and Sabreliner NA-265-65. Note: This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must use the authority provided in paragraph (b) to request approval from the Federal Aviation Administration (FAA). This approval may address either no action, if the current configuration eliminates the unsafe condition, or different actions necessary to address the unsafe condition described in this AD. Such a request should include an assessment of the effect of the changed configuration on the unsafe condition addressed by this AD. In no case does the presence of any modification, alteration, or repair remove any engine from the applicability of this AD.
- AD 96-04-01 One-time Engine
AlliedSignal Inc. TFE731 Series Turbofan Engines
To prevent an uncontained failure of the fan rotor disk due to fatigue cracking in the dovetail slots, which can result in inflight engine shutdowns, severe secondary damage, and fan rotor assembly separation from the engine.
Applicability, as the AD words it
AlliedSignal Inc. (formerly Garrett Engine Division) TFE731-2, -2A, -3, -3R series turbofan engines with fan rotor disks, part numbers (P/N's) 3072162-1 through -4, 3073436-1 through -4, 3073539-2, and 3074529-2, installed on, but not limited to: Avions Marcel Dassault Falcon 10, 50, 100 series; Learjet 31, 35, 36 series; Lockheed-Georgia 1329-23, -25 series; Israel Aircraft Industries 1124 series; Raytheon British Aerospace HS125 series; and Sabreliner NA-265-65 aircraft. Note: This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must use the authority provided in paragraph (e) to request approval from the Federal Aviation Administration (FAA). This approval may address either no action, if the current configuration eliminates the unsafe condition, or different actions necessary to address the unsafe condition described in this AD. Such a request should include an assessment of the effect of the changed configuration on the unsafe condition addressed by this AD. In no case does the presence of any modification, alteration, or repair remove any engine from the applicability of this AD.
- AD 95-20-03 One-time
Learjet Model 24, 25, 28, 29, 31, 35, 36, and 55 Series Airplanes
To prevent rapid decompression of the airplane due to cracking and subsequent failure of certain outflow/safety valves.
Applicability, as the AD words it
Model 24, 25, 28, 29, 31, 35, 36, and 55 series airplanes having airplane serial numbers listed in the Learjet service bulletins listed below; and equipped with Allied Signal outflow/safety valves, number 130406-1 or 102850-5, as identified in Allied Signal Aerospace Alert Service Bulletin 130406-21-A4011, Revision 3, dated January 5, 1995, or 102850-21-A4021, Revision 2, dated October 6, 1994; certificated in any category: Service bulletin Service bulletin reference revision level Service bulletin date Learjet Service Bulletin SB Original: January 3, 1995. 24/25-21-4. Learjet Service Bulletin SB Original: January 3, 1995. 28/29-21-8. Learjet Service Bulletin SB Original: January 3, 1995. 31-21-6. Learjet Service Bulletin SB Original: January 3, 1995. 35/36-21-19. Learjet Service Bulletin SB Original: January 3, 1995. 55/21-10.
- AD 94-01-06 One-time Appliance
Airworthiness Directives: Rockwell International, Collins Air Transport Division, Traffic Alert and Collision Avoidance System II Processors
To prevent collisions or near misses caused by incompatibility between the traffic alert and collision avoidance system (TCAS) II processors and the current air traffic control system.
Applicability, as the AD words it
Traffic Alert and Collision Avoidance System II processors that are installed on, but not limited to the following airplanes (all serial numbers), certificated in any category: General Aviation Airplanes Astra Model 1125 airplanes BAC Model 1-11 airplanes British Aerospace Model 125-800 airplanes Beech Models C90A, B200, 300, 350, and 400A airplanes Canadair Models CL-600, CL-600-2B16, CL-601, CL-601-1A, and CL-601- 3A airplanes Learjet Models 31, 55, and 60 airplanes Falcon Models 20, 50, 200, and 900 airplanes Gulfstream Models G2 and G3 airplanes British Aerospace Models HS-125-700 airplanes and Sabreliner Model 60 airplanes Air Transport Airplanes Aerospatiale Models ATR-42 and ATR-72 airplanes Airbus Industries Models A300B2, A-300B, and A-320 airplanes British Aerospace Models ATP and 146 airplanes Boeing Models 707, 727, 737, 747, 757, and 767 airplanes British Aerospace/Aerospatiale Model Concorde SST airplanes de Havilland DHC-7 and DHC-8 series airplanes McDonnell Douglas Models DC-8, DC-9, and DC-10, MD-80, and MD-11 airplanes Ilyushin Model IL-86 airplanes Lockheed Model L-1011 airplanes SAAB Models SF340A and SF340B airplanes and Shorts Models SD3-60-300 airplanes.
2 superseded or removed ADs
- AD 96-11-07 Superseded by AD 98-06-28
Learjet Model 31 and 35A Airplanes
To prevent electrical arcing and subsequent fire hazard.
Applicability, as the AD words it
Model 31 airplanes having serial numbers 31-002 through 31-029 inclusive, and Model 35A airplanes having serial numbers 35-647 through 35-670 inclusive; certificated in any category.
- AD 93-25-16 Superseded by AD 96-04-01 Engine
Allied-Signal Aerospace Company, Garrett Engine Division, TFE731 Series Turbofan Engines
To prevent an uncontained fan disk failure.
Applicability, as the AD words it
Allied-Signal Aerospace Company, Garrett Engine Division, TFE731-2, -3, and -3R series turbofan engines installed on but not limited to Sabreliner NA-265-65 (Sabreliner 65); Israel Aircraft Industries 1124 series (Westwind); Avions Marcel Dassault Falcon 10, 50, 100 series; Learjet 35, 36, and 31 (M31) series; British Aerospace BAe HS125 series; and Lockheed 1329-23, -25 series (731 Jetstar, Jetstar II) aircraft.
Radar reads the aircraft’s logbooks and ties each AD to the entries that show how and when it was complied with, with recurring ADs due by date and hours.
QUESTIONS
Learjet 31 (certified family) AD questions
Source: FAA final rules under 14 CFR part 39, from the Federal Register. The FAA’s Dynamic Regulatory System holds the official list.
How many airworthiness directives apply to the Learjet 31 (certified family)?
22 FAA ADs published since 1995 name the Learjet 31 (certified family)'s type certificate model (31) in their applicability. 20 are still in effect as far as the Federal Register shows; the others were superseded by a later AD or removed. How many apply to one aircraft depends on its serial number, equipment and modifications.
Which Learjet 31 (certified family) ADs are recurring?
4 of the ADs in effect require actions that repeat, such as inspections at set intervals, until a terminating action is done. They are marked Recurring above. One-time ADs are complied with once, but the compliance record stays with the aircraft.
What is the latest Learjet 31 (certified family) airworthiness directive?
AD 2010-06-11, effective Apr 21, 2010: Honeywell International Inc. TFE731 Series Turbofan Engines. The list is refreshed from the Federal Register every weekday.
How do I know whether an AD applies to my Learjet 31 (certified family)?
Read the AD's applicability paragraph, shown with each AD on this page, against the aircraft's serial number and its installed engines, propellers, parts and modifications. A certificated mechanic or inspector makes the determination and records the method of compliance in the maintenance records. The FAA's Dynamic Regulatory System holds the official list of ADs.
Why are engine and propeller ADs missing?
This page lists ADs whose applicability names the Learjet 31 (certified family) airframe, plus appliance ADs that list it among the aircraft they can be installed on. Engine and propeller ADs name the engine or propeller model rather than the aircraft, so check them by the installed engine and propeller models.
Every AD on your Learjet 31 (certified family), tied to the logbook entry that closed it.
Radar reads every logbook page, typed or handwritten, and builds one searchable record per tail: times, inspections, ADs and components, each tied to the page it came from.